Reversible lock washer



FIG. 1 is a top perspective view of a reversible lock washer, showing my new design;

FIG. 2 is a bottom plan view thereof;

FIG. 3 is an enlarged fragmentary sectional view taken in the direction of the arrows on line 3--3 of FIG. 1. 

The ornamental design for a reversible lock washer, as shown and described. 